JPH08287974A - Synthesis substance housing that houses electric contact point element and contact element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To widen an electrical contact element for another electric current sending out part connected in parallel by making the free end of the electrical contact element as a flat blade and forming a pair of fork springs or a pair of flat springs in the free end. SOLUTION: This electrical contact element 1 has two double knife edge terminal pairs 4 arranged in parallel to each other. Each edge terminal pair 4 comprises two terminal legs 4a and these terminal legs form a insertion slit 4 between them for an electric table. As electrical current sending parts connected in parallel, double fork spring pairs 5 are arranged in the free end of the electric contact element 1 on the opposite to the flat blades 2. Each of these fork spring pairs 5 comprises two fork spring legs 5a, and these fork spring legs form an insertion slit 5b between themselves.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a double knife edge terminal pair (Doppelschneidklemmenp).
aar) has formed between its terminal legs, which can be elastically bent away from each other, an insertion slit for the knife-edge terminal contact of an electrical cable, the electrical conductor of this cable being In an enclosed, knife edge terminal technique for cable plug connection, it relates to an electrical contact element which is bent from a flat plate punch and is to be placed in the space of the synthetic material housing. The invention further relates to a synthetic material housing for housing such an electrical contact element.

[0002]

2. Description of the Prior Art Electrical contact elements such as those mentioned at the outset are known, for example, from EP 0 416 306. This known electrical contact element has a fork spring pair at one end, between fork spring legs which can be elastically bent away from each other of the fork spring pair, in the knife edge terminal technique an electrical conductor. Can be fixed. The other end of the contact element is in the form of a pair of spring pieces, and there is, for example, electrical contact between the pair of spring pieces, so that the contact pin of the plug of the electrical plug connection can be inserted. In addition to these two possibilities, i.e. mounting on the contact pins of the plug and contacting the electrical conductor with a knife-edge terminal, this known electrical contact element can be connected to another plug connection or to another electrical current. There is no possibility to connect in parallel to the outflow.

[0003]

It is an object of the present invention to start from this and to extend the electrical contact element in the knife-edge terminal technology of the electrical cable plug connection with respect to another current source connected in parallel.

The technical solution to this problem has the following characteristics: The free end of the electrical contact element is configured as a flat blade for insertion into the connection and the free end of the electrical contact element facing the flat blade is provided with a fork spring or a fork for receiving the connecting plug. A leaf spring pair is formed. Configurations with fork spring pairs are recommended by the present invention.

By configuring the ends of the electrical contact elements as flat blades on the one hand and pairs of fork springs on the other hand, in addition to the insertion of the flat blades into the connection of the knife edge terminal contact and the electrical plug connection, It is possible to extend the electrical contact element with respect to another current outlet connected in parallel, i.e. with respect to the pair of fork springs formed at the other free end. Between the fork spring legs of this fork spring pair, contact pins of a plug of another plug connection can be inserted, for example for electrical contact.

According to an advantageous design of the electrical contact element according to the invention, the terminal legs of the double knife edge terminal pair are symmetrically constructed and have the same elasticity. According to this configuration, both terminal legs are evenly deflected at the time of terminal contact,
And it is guaranteed that the bending can be loaded.

According to an alternative construction, the cable insertion area of one of the terminal legs is designed to be longer, which results in different elasticity of both terminal legs.

According to an advantageous design of the electrical contact element, the plate stamped part is folded in two layers in the area of the flat blade. This two-layer construction of the flat blade ensures a reliable contact at the corresponding connection of the cable plug connection.

A terminal bridge with barbs is arranged between the flat blade and the double knife edge terminal pair in order to ensure a secure retention of the electrical contact element in the synthetic material housing, whereby The electrical contact element is clamped immovably in the synthetic material housing after being completely inserted into the synthetic material housing.

According to another aspect of the invention, the double knife edge terminal pair and the insertion slit of the fork spring or leaf spring pair, and the flat blade are arranged in one plane.

The synthetic material housing for accommodating at least one electrical contact element according to the invention comprises a narrow guide passage for accommodating a pair of double knife-edge terminals and an expanded accommodating space for accommodating a flat blade, as well as a synthetic material. On the outside of the housing, at least one resiliently displaceable locking arm with locking hooks is provided for permanently coupling the substance housing to another housing, the locking arms being , Fits into a notch in another housing.

In order to secure the electrical contact element inside the housing, a guide channel is widened adjacent the receiving space for the flat blade and for accommodating the terminal bridge of the electrical contact element, The spacing of the sidewalls of the terminal area is somewhat smaller than the width of the electrical contact element in the area of the terminal bridge, and the terminal area has a stop surface to limit the insertion depth of the electrical contact element.

In an advantageous construction of the housing according to the invention for accommodating a plurality of electrical contact elements, the accommodating space for the flat blades in which the flat blades are arranged parallel to one another is formed in the shape of a bath. This accommodation area, together with the flat blades therein, for contact with the corresponding further electric plug coupling connections arranged in parallel inside
It is easy to install in this separate housing. The bathtub-like configuration of the receiving space without intermediate bridges between the flat blades allows easy and reliable contact with another plug connection. This is because the side wall of the receiving space guides the plug connection with the flat blade on contact on the one hand, and on the other hand ensures a secure retention in the other housing.

[0014]

Further details and advantages will be apparent from the following description of the accompanying drawings, in which each one of the electrical contact elements according to the invention and the housing according to the invention containing the contact elements is described. Two examples are shown schematically.

1 and 2 show an embodiment of an electrical contact element in the knife-edge terminal technology of electrical cable plug connection, while the illustration of FIGS. 3 and 4 shows that the electrical contact is housed in a housing. And a special construction of the corresponding housing for locking it is shown.

The electrical contact element in FIGS. 1 and 2 consists of a piece of plate punched out from which the electrical contact element 1 is bent by a continuous bending process.
Then, from the flat plate stamped part, the electrical contact element 1 as shown in FIGS. 1 and 2 is obtained. One free end of the electrical contact element 1 is configured as a flat blade 2, which can be inserted for electrical contact, for example in the connection of an electrical plug connection. The flat blade 2 has a locking hole 2 in order to securely fix it in the connecting portion.
a.

In order to be able to contact the electrical contact element 1 with the electrical cable 3 in the so-called knife edge terminal technology, the electrical contact element 1 is arranged in parallel with each other 2.
It has four dual knife edge terminal pairs 4. Each of these dual knife-edge terminal pairs 4 consists of two terminal legs 4a, which form an insertion slit 4b for the electrical cable 3 therebetween.

In the configuration of the double knife-edge terminal pair 4, which is particularly clear from FIG. 2, both terminal legs 4a are of symmetrical design. Due to this symmetrical configuration, both terminal legs 4a have the same elasticity, i.e. both terminal legs 4a.
The a can be bent to be elastically separated from each other to the same extent when the electric cable is inserted into the insertion slit 4b.

In the electrical contact element shown, both double knife-edge terminal pairs 4 are arranged approximately in the center of the electrical contact element 1, so that the electrical contact element 1 has a flat blade 2
At the free end opposite to, it is possible to extend, in particular with respect to another parallel-connected current drain, as is apparent from FIGS. A double fork spring pair 5 is arranged at the free end of the electrical contact element 1 facing the flat blade 2 as an additional parallel connected current drain. Each of these fork spring pairs 5 has two fork spring legs 5
These fork spring legs form an insertion slit 5b between themselves. Into the insertion slits 5b between the fork spring legs 5a, for example, a flat blade 2 with another electrical plug connection can be inserted for electrical contact. In order to ensure a positive contact of this flat blade 2 between the fork spring legs 5a, an inwardly directed contact region 5c is formed at the end of the fork spring leg 5a, which contact regions are
The flat blade 2 fits into the locking hole 2a.

As is apparent from FIGS. 2 and 3, all contact points of the electrical contact element 1 are namely the flat blade 2, the insertion slit 4b of the double knife edge terminal pair 4 and the insertion slit 5b of the fork spring pair 5. Is in one plane.

Furthermore, the electrical contact element 1 has a terminal bridge 6 between the flat blade 2 and the double knife edge terminal pair 4, these terminal bridges being at their end faces, as is particularly apparent from FIG. It has a barb 6a and is used for fixing the electrical contact element 1 in the housing 7.

The housing 7 consists of a synthetic material part which is manufactured in one piece as usual. As is apparent from FIG. 3, the housing 7 has a narrow guide passage 7a for accommodating the fork spring pair 5 and the double knife edge terminal pair 4, and an expanded accommodating space 7b for accommodating the flat blade 2. FIG.
The housing 7 shown in FIG. 1 is configured to accommodate four electrical contact elements 1. An electrical contact element 1 having a fork spring pair 5 for inserting the electrical contact element 1 in the housing 7 and for contacting the electrical cable 3.
Is inserted from the accommodation space 7b into the guide passage 7a until the terminal bridge 6 first contacts the side wall of the terminal area 7c arranged between the accommodation space 7b and the guide passage 7a. After that, the electric cable 3 is inserted into the hole 7d of the housing 7 as shown in FIG. In order to finally secure the electrical contact element 1 in the housing 7 and to bring the electrical cable 3 and the double knife edge terminal pair 4 into contact, the electrical contact element is subsequently arranged such that the terminal leg 4a is a projection of the guide channel 7a. 7e
And is further pushed into the housing 7 until the terminal bridge 6 reaches the stopper surface 7f. Since the spacing between the side walls of the terminal area 7c is somewhat smaller than the width of the electrical contact element 1 in the area of the terminal bridge 6, the barbs 6a of the terminal bridge 6 are locked immovably in the synthetic material housing.

The contact between the double knife edge terminal pair 4 and the electrical cable 3 is such that when the electrical contact element 1 is inserted into the housing 7, the electrical cable 3 is pushed into the insertion slit 4b between the terminal legs 4a. It is done by Since the opposite edges of both terminal legs 4a are sharpened, the terminal legs 4a are in the insulation of the electrical cable 3 until the terminal legs 4a contact the electrical conductors of the electrical cable 3 and thus form electrical contacts. Bite into.

As is clear from the left side of FIG. 3,
When the electrical contact element 1 is completely inserted into the housing 7,
The contact spring pair 5 with the insertion slit 5b facing outward is arranged near the upper end of the guide passage 7a, for example a flat blade 2 of another electrical plug connection is inserted between the fork spring legs 5a. It can be inserted in the slit 5b, thus allowing another current drain connected in parallel to the double knife edge terminal pair 4.

The accommodation space 7b for the flat blades 2 is constructed in the shape of a bath, and all the flat blades 2 of the electrical contact element 1 arranged in this housing 7 are arranged parallel to each other. The accommodation space 7
b is formed only by the side wall of the housing 7 which projects somewhat beyond the flat blade 2 in the longitudinal direction. This bathtub-like configuration of the accommodation space 7b for the flat blade 2 allows the flat blade 2 to be mounted in another housing 7 for contacting another electrical plug connection, wherein the accommodation space is The side walls of 7b on the one hand facilitate the guidance during installation and on the other hand ensure a secure retention in the other housing and enable coding 7f. Therefore, according to FIG. 6, various coding bridges 7f can be clamped in plan view, one coding bridge being shown diagrammatically by the reference numeral 7g.

The holding of the two housings 7 thus attached to each other according to FIG. 4 is reinforced by a locking arm 8 arranged outside the housing 7, which locking arm is mounted by a locking hook 8a. The housing 7 is fitted in a corresponding notch 8b. According to the modified configuration shown in FIG. 5 of the drawings, inner locking is also possible. The locking arm 8'has therefore a locking projection 8a ', which does not project beyond the outer housing. Unlocking is done by pulling on the housing. In order to facilitate unlocking, the locking projection 8a 'is provided with an inclined portion 8c.

With the electrical contact element 1 thus constructed and the correspondingly constructed housing 7, via the double knife edge terminal pair 4 and the knife edge terminal contact of the electric cable 3 and the flat blade 2. In addition to the connection, it is possible to make another current outflow in parallel via the fork spring pair 5. The provision of an additional current drain, in particular as a pair of fork springs 5, allows easy contact with the flat blade 2 of another electrical plug connection.

[Brief description of drawings]

1 is a plan view of an electrical contact element. FIG.

2 is a side view of the electrical contact element according to FIG.

FIG. 3 is a plan view showing, in a partial cross section, a housing in which electrical contact elements are arranged.

4 is a cross-sectional view taken along the section line BB of FIG.

FIG. 5 is a diagram showing a modified configuration with respect to FIG. 4 having an inner locking portion.

FIG. 6 is a plan view of the housing of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrical contact element 2 Flat blade 3 Electric cable 4 Double knife edge terminal pair 4a Terminal leg 4b Insertion slit 5 Fork spring pair 7 Synthetic material housing

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Bernhard Burkart Germany Hilden Doutzkerve Ek 22 Germany (72) Inventor Horst Ribetsk Germany Wuppertal Gerber Rusztraße 5 (72) Inventor Manfred Kotzho Germany Republic Wiutten Bruno Heideschutlerse 20 (72) Inventor Weilhelm Kitzpelt Federal Republic of Germany Wuppertal Dasnaker 55

Claims (9)

[Claims] 1. A double knife edge terminal pair (4) for knife edge terminal contact of an electrical cable (3) between its terminal legs (4a) which can be elastically bent away from each other. Forming an insertion slit (4b),
An electrical contact element, in which the electrical conductors of this cable are surrounded by an insulator, bent in the knife-edge terminal technology of the cable plug connection from a flat plate stamped part and placed in the space of the synthetic material housing (7). (1)
At the free end of the electrical contact element (1), the free end of the electrical contact element (1) is configured as a flat blade (2) for inserting into the connection and is opposite the flat blade (2). Electrical contact element, characterized in that at the end a fork spring or a leaf spring pair (5) is formed to accommodate the connecting plug. 2. Electrical contact element according to claim 1, characterized in that the terminal legs (4a) of the double knife-edge terminal pair (4) are symmetrically constructed and have the same elasticity. 3. The terminal legs (4a) of the double knife edge terminal pair (4) have different elasticity.
An electrical contact element according to claim 1. 4. Electrical contact element according to claim 1, characterized in that the punched-out part is folded in two layers in the area of the flat blade (2). 5. Terminal with barbs (6a) between the flat blade (2) and the double knife edge terminal pair (4) for fixedly clamping the electrical contact element (1) in the housing. Characterized in that a bridge (6) is arranged,
An electrical contact element according to one of claims 1 to 4. 6. The insertion slits (4b, 5b) of the double knife edge terminal pair (4) and the fork spring pair (5) and the flat blade (2) are arranged in one plane. An electrical contact element according to claim 1, characterized in that 7. A narrow guide passage (7a) accommodating a double knife edge terminal pair (4) and a fork spring pair (5), and an expanded accommodating space (7) accommodating a flat blade (2).
In a synthetic material housing with b) at least one elastically displaceable with locking hooks (8a) on the outside of the housing (7) for locking the housing (7) to another housing. Composite housing containing at least one electrical contact element (1) according to claims 1 to 6, characterized in that one locking arm (8) is arranged. 8. A storage space (7) for the flat blade (2).
The area of the guide passage (7a) accommodating the terminal bridge (6) adjacent to b) is widened, the spacing of the side walls of the terminal area (7c) being such that the electrical contacts in the area of the terminal bridge (6). 8. Housing according to claim 7, characterized in that it is somewhat smaller than the width of the element and the terminal area (7c) has a stop surface (7f) for limiting the insertion depth of the electrical contact element (1). 9. The accommodation space (7b) is formed in the shape of a bathtub for attachment to another housing (7), whereby the side walls of the housing (7) are arranged in parallel flat blades (7). 9. A housing according to claim 7 or 8, characterized in that it extends somewhat beyond 2) in the longitudinal direction.